BitLocker Partition: How to Partition A BitLocker Drive on Windows 10

Updated by

Shelly 

Written by

Tracy King 

Updated on Apr 28, 2025

Typically, most partition software does not work to partition the BitLocker encrypted partition/drive. Fortunately, the newest EaseUS Partition Master can do the BitLocker partition adjustment. Check the basic knowledge below and follow the steps to partition a hard drive.

What Is BitLocker and How Does It Work

BitLocker is the Windows encryption technology designed to prevent data theft and malicious disclosure. It protects data by encrypting the Windows partitions.

Availability:

• Ultimate and Enterprise editions of Windows Vista and Windows 7.
• Pro and Enterprise editions of Windows 8 and 8.1.
• Pro, Enterprise, and Education editions of Windows 10.

TPM and USB are the two encrypting modes of BitLocker. TPM (Trusted Platform Module), as a hardware component, comes with the newer computers installed by computer manufactures. 

Notes: To check if your PC has a TPM version, run devmgmt.msc to open Device Manager and see if there is a node called a secure device. And if there is a TPM device under the node.

If the TPM version does not exist on your PC, you can use USB to encrypt Windows operating system drive. However, it requires users to insert the USB boot key to start the PC. If you want to know more about BitLocker, you can navigate to Microsoft.

Download the BitLocker Partition Software - EaseUS Partition Master

To resize BitLocker partition or clone encrypted BitLocker drive without disabling protection, you can resort to EaseUS Partition Master. If you want to partition BitLocker data drive, you can use this robust partition software to make it easy.  

How to Partition BitLocker Drive on Windows 10 Without Decryption

Steps to resize/delete/format/shrink partitions:

Step 1. Click "Partition Manager", select the Bitlocker partition and choose the "Unlock" option. Then, enter your password to unlock Bitlocker.

Step 2. Right-click the Bitlocker partition and select the "Resize/Move" option.

Step 3. Shrink or extend your Bitlocker by dragging your mouse towards the unallocated space. The "Fill in all unallocated" button can help you utilize all unallocated space immediately.

Step 4. Click Execute Operation and the "Apply" button to start partitioning or resizing the Bitlocker drive.

Extra Tips about BitLocker Partition

1 - How to Use Bitlocker

Step 1. Input "Control and Panel" on the search box.

Step 2. Click "System and Security" (or it directly shows on "All Control Panel Items"), choose "BitLocker Drive Encryption".

Step 3. Select targeted partition under the operating system drive or Removable data drive.

Step 4. Click "Turn on BitLocker".

2 - How to Unlock BitLocker Drive

Step 1. Open Windows File Explorer and right-click on the BitLocker Encrypted Drive.

Step 2. Choose "Unlock Drive" from the menu.

Step 3. Input the BitLocker password and click "Unlock".

3 - Bitlocker Partition Encryption: How to Decrypt Bitlocker 

Decryption will take more time to finish the operation.

Step 1. Input "Control Panel" on the search box.

Step 2. Click "System and Security" > Choose "BitLocker Drive Encryption".

Step 3. Find the encrypted drive to turn off the encryption.

Click "Turn off BitLocker".

Partition BitLocker on SSD/HDD? Try Partition Software Here!

Now we post steps to resize BitLocker partition or a data BitLocker Drive. Did this article helpful? You can also check the following article to learn more about BitLocker.

If you encounter any technical issue with our product, please send an email to support@easeus.com or contact our technical support team via online chat.